How to get the length of a string in MySQL?

In MySQL, you can use the `LENGTH()` function to retrieve the length of a string.

Here is an example of using the `LENGTH()` function to retrieve the length of a string:

SELECT LENGTH('Hello World') AS string_length;

This will return the length of the string `’Hello World’`, which is `11`.

To get the length of a string in a column of a table, you can use the `LENGTH()` function with a `SELECT` statement and the corresponding column name. For example:

SELECT LENGTH(column_name) AS string_length FROM table_name;

Please make sure to replace `column_name` with the name of the column you want to get the string length of, and `table_name` with the name of the table from which you want to select data.

Please note that the `LENGTH()` function retrieves the number of characters in a string, not the number of bytes. In multi-byte character sets such as UTF-8, one character may consist of multiple bytes, so the byte size of a string may differ from the character count.